133198910 has 32 divisors (see below), whose sum is σ = 273393792. Its totient is φ = 46287360.

The previous prime is 133198903. The next prime is 133198921. The reversal of 133198910 is 19891331.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27926 + ... + 32345.

It is an arithmetic number, because the mean of its divisors is an integer number (8543556).

Almost surely, 2^133198910 is an apocalyptic number.

133198910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133198910 is an abundant number, since it is smaller than the sum of its proper divisors (140194882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133198910 is a wasteful number, since it uses less digits than its factorization.

133198910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60308.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 133198910 is about 11541.1832149048. The cubic root of 133198910 is about 510.7012140874.

The spelling of 133198910 in words is "one hundred thirty-three million, one hundred ninety-eight thousand, nine hundred ten".